Plant Structure and Growth•Know the difference between:herbaceous and woody plantsannuals, biennials and perennialsdicots and monocotsdeciduous and evergreens•Understand the basic divisions of the plant body. Be able to list and explain the function of the three types of tissue systems that exist in the vascular plant.

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Plant Structure and Growth•Understand the differences in the cell wall structure of the various types of tissue. Know the types of simple and complex tissues that make up these tissue systems and the role they play in allowing the tissue system to carry out its role. Be able to describe the structure and function of the two types of vascular tissues in plants.•Be able to explain how plants grow and the difference between primary and secondary growth.

PlantsOver 300,000 varitiesSizeClimateAll have the same basic structurerootsstemsleaves

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Ground Tissue System (Collenchyma)Collenchyma cellsUneven thick 1° cell wallsFlexibleProvides supportin soft, non-woodyorgansNot found uniformly throughout the plantOccurs as long stands near stem surfaces and along leaf veins

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Ground Tissue System (Sclerenchyma)Sclerenchyma cells1° and 2° cell wallsUnable to stretch andElongateProvide support for plantbody (dead cells)Sclereids: variable shape cells found in shells of nuts or stones of fruitFibers: long, tapered cells often found in patches or clumps in wood, inner bark, and leaf ribs